Pariyapat Puengsawad, Chanitchote Piyapittayanun, Thornthan Sawangwan and Sudathip Chantorn 2021. Characterization of Bacillus subtilis GA2(1) mannanase expressed in Escherichia coli Rosetta (DE3) for enzymatic production of manno-oligosaccharides from spent coffee grounds and in vitro assessment of their prebiotic properties. Agriculture and Natural Resources. 55, 3 (Jun. 2021), 319–330.